iphone - 为什么我在使用 Core Plot 构建 iPhone 应用程序时会看到以下链接器错误？

Question

在构建使用 Core Plot 框架的 iPhone 应用程序时，我看到以下链接器错误:

ld: warning: ignoring file /Users/taxtmart5/Library/Developer/Xcode/DerivedData/Solagen_Calculator-cwvwcdlnuukfftakggygqoczxyuy/Build/Products/Debug-iphoneos/libCorePlot-CocoaTouch.a, file was built for archive which is not the architecture being linked (armv6)
Undefined symbols for architecture armv6:
  "_OBJC_CLASS_$_CPPlotRange", referenced from:
      objc-class-ref in VerticalBarChart.o
  "_OBJC_CLASS_$_CPXYGraph", referenced from:
      objc-class-ref in VerticalBarChart.o
  "_OBJC_CLASS_$_CPLineStyle", referenced from:
      objc-class-ref in VerticalBarChart.o
  "_OBJC_CLASS_$_CPTextStyle", referenced from:
      objc-class-ref in VerticalBarChart.o
  "_OBJC_CLASS_$_CPAxisLabel", referenced from:
      objc-class-ref in VerticalBarChart.o
  "_OBJC_CLASS_$_CPBarPlot", referenced from:
      objc-class-ref in VerticalBarChart.o
  "_CPDecimalFromString", referenced from:
      -[VerticalBarChart renderInLayer:withTheme:] in VerticalBarChart.o
  "_OBJC_CLASS_$_CPColor", referenced from:
      objc-class-ref in PlotItem.o
      objc-class-ref in VerticalBarChart.o
  "_OBJC_CLASS_$_CPMutableTextStyle", referenced from:
      objc-class-ref in PlotItem.o
  "_OBJC_CLASS_$_CPFill", referenced from:
      objc-class-ref in VerticalBarChart.o
  "_OBJC_CLASS_$_CPGraphHostingView", referenced from:
      objc-class-ref in PlotItem.o
  "_CPDecimalFromFloat", referenced from:
      -[VerticalBarChart renderInLayer:withTheme:] in VerticalBarChart.o
  "_kCPPlainWhiteTheme", referenced from:
      -[VerticalBarChart renderInLayer:withTheme:] in VerticalBarChart.o
  "_OBJC_CLASS_$_CPTheme", referenced from:
      objc-class-ref in VerticalBarChart.o
ld: symbol(s) not found for architecture armv6
collect2: ld returned 1 exit status

在 Xcode 3.x 下，我能够成功地构建这个项目，但是对于 Xcode 4，它在定位设备时会出现上述错误(模拟器仍然可以正确构建)。

可能导致这些错误的原因是什么，我该如何解决？

Answer 1

我可以通过以下方式解决我的问题

改变build设置，

架构:标准(armv6，armv7)

仅构建事件架构:是的。